Pasting machine



Patented July 5, 1927.

UNITED STATES PATENT! OFFICE.

ERNEST E. SABIN, OF BEVERLY, MASSACHUSETTS, ASSIGNOR TO UNITED SHOE MA-CHINERY CORPORATION, OF PATERSON, NEW JERSEY, A CORPORATION OF NEWJERSEY.

PASTING MACHINE.

- My invention relates to machines for applying such adhesives as pasteto various object-s, it being especially adapted for the coating ofmolded counters prior to their application to the shoesof which they areto form a part.

The invention has as an object the provision of effective means foroperating upon articles, having the curved contour of a mold-ed contour,to apply a coating of adhesive thereto. This coating may be eitherinternal or both internal and external, as desired. My inventionprovides an improved machine which, as a result of the form and relationof the members co-operating with the work, applies adhesive uniformlyacross the entire width of the counter, including the bottom flange, andwithout the accumulation of an excess of the adhesive at the edges.There is, moreover, no guiding action of the work through the machinerequired of the operator, who has only to present the articles forengagement by the applying member or members and to remove those whichhave been coated.

A further object of my invention is to govern the supply of adhesivedelivered by the applying member. Preferably, there is exercised acontrol effective to cause the delivery of adhesive only while theoperator is in operating position, the supply at other times being shutoff. With this governing means there may also be associated'a control ofthe volume of flow.

As another object, the invention provides a compact arrangement by whichthe adhesive may be supplied to the applying memher, and any excessdelivered thereto conveniently cared for without undue exposure todrying.

In the accompanying drawing, illustrating a particular embodiment of theinvention,

Fig. 1 is a side elevation of my improved pasting machine, parts beingbroken away;

Fig. 2 is a broken front elevation with the casing in section; and

Fig. 3 is a perspective view of the work-en- 'gaging members and moreclosely associated parts.

The active elements of the machine are carried by a casing having abase-section 10 and .a removable upper section 12, there being journaledin the upper portion of the latter a horizontaltubular shaft 14projecting outside the casing, where it carries an applying member,preferably in the form of a brush 16. This brush has a hollowcylindricalbody 18, closed at the outer end by a head 20, the body beingconnected to the shaft 14 by'a bayonet-joint 22 (Fig. 3), which permitsthe brush to be removed readily for cleaning. In the periphery of thebody 18 are set tufts 24 of bristles or other fibers, the outer surfaceof which serves to apply the paste, while between these tufts of fibersare openings 26 through the bodywall, these providing passages by whichthe paste is delivered to the applying surface.

Connected by a union 32 (Fig. 2) to the shaft 14, to supply paste to achamber 30 within the brush-body, is a pipe or conduit 28. This pipeextends vertically to a point near the bottom of the base, where itturns and enters the casing, passing through a stuffing box 34 into areceptacle 36 for the paste. When this term paste is employed, either inthe description or claims, it is to be understood that there is definedthereby any form of adhesive which is suitable for use with the presentmachine. The receptacle 36 rests upon the lower wall or floor of thecasing, access being had to it through the open front of the casing.WVithin the receptacle,-immersed in the contents thereof, is a pump '38,which may be of the double gear type. The inlet opening 40 of this pump,situated at one side of the casing, receives the paste, which is forcedthrough the outlet to which the pipe 28 is connected. .The pump-casingis joined at 42 to the wall of the receptacle, so that the passage ofpaste into the base is prevented, and through this connection extends ashaft 44, transmitting power to the rotary elements of the pump. Theshaft 44 is shown as driven by belt-gearing 46 from a shaft 48 journaledhorizontally in the section 12 of the casing. This shaft is, in turn,rotated by worm-gearing 50 from the shaft of a motor 52 supported withinthe upper casing-section and receiving ourrent through conductors 54entering the casing through an insulating bushing 56 at the top.

I have illustrated means'for controlling intwoways the delivery of pastethrough the pipe" 28. Sincethe pump 38 1s a continuously actingmechanism, it is desirable, to prevent waste of the paste, to have thedelivery cease when the operator is not in operating position preparedto present work to the applying member. Therefore, there is included inthe pipe 28 a valve 58, having ex tending from its stem an arm 60, whichis acted upon by a spring 62 to hold the valve normally closed. The armis joined by a connecting rod 6t to a treadle 66 fulcrumed at the lowerportion of the base. When the operator is ready to start work upon themachine, he places his foot upon the treadle,

and lowers the arm 60 against the tension of the spring. This permitsthe pump, which has been working idly, to force the paste through thepipe into the brush-chamber 30, and through the openings 26 among thefibers and thus to the applying surface. The pipe 28 also has in it avalve 68, which may be manually operated by a wheel 7 0 upon itsspindle. Adjustment of this valve varies the rate of flow of the pastethrough the pipe, and therefore the quantity available upon the surfaceof the brush for application to the work.

Co-operating with the brush, at its under side, is an engaging member 72arranged to support the work and hold it pressed against the primaryapplying surface, and also being itself adapted to apply paste to thework. This roll 72 is attached, preferably by a bayonet-joint 73 (Fig.3), to a shaft 7% journalled in the casing-section 12 parallel to thebrush-shaft 18, and preferably has the longitudinal contour of itsperiphery substantially corresponding to the transverse contour of acounter which is to be pasted. A molded counter is illustrated at C inthe drawing, and by the phrase transverse contour as applied to thiscounter is meant the form of the side-wall or body a between thebottom-flange a and what is normally the upper edge of the body 0. Theoutside of the brush, which is of such diameter as to enter andapproximately till the space between the opposite walls of thecounter-body, also has at its periphery a longitudinal contour generallycorresponding to the inside of the counter, but preferably departs fromthis at the inner extremity, where the ends of the brush-fibers bearwith some force against and are deflected by the roll 72, which here isshown as extending somewhat beyond the brush. The purpose of thisrelation will be explained later. At the outer extremity of the roll isa work-gage, furnished by an annular plate or flange 76, placed close tothe sides of the outer brushtibers, but permitting the entrance of acounter-flange. The brush and roll are rotated, preferably at the samesoeed, from the shaft .:8 through a chain of spur-gearing 78, oneelement of which is fixed upon an intermediate idle shaft journaled inthe casing between the shafts 48 and 74:, while the others are upon suchshafts and that of the brush. I

Ordinarily, counters are not pasted upon their exteriors, and since,when there is no work passing between the brush and roll, the formerwill deliver paste to the latter, means is provided for constantlyremoving this. For this purpose there is pivoted at 82- (Fig. 3), uponthe adjacent wallof the casing-section 12, a scraper "85 for contactwith the roll. As illustrated, the body of this scraper is angular,extending from the pivoted portion, which is approximatelyvertical,horizontally at and here furnishing a table upon. which thework-piecesmay rest in preparation for their advance to the applyingroll and supporting member. At the edge of the scraper co-operates withand conforms to the periphery of the supporti ig roll, while at 88 thisscraper is cut away to lit the flange 76, so it may be caused to removethe paste therefrom both sides and along its periphery. of the scraperhas a portion 90 for engagement with the hub of the roll. A spring 92,attached to the under side of the scraper and to a relatively fixedpoint, as upon the casing, draws the engaging edge toward the roll, themovement in this direction being limited and controlled in extent by ascrew 94 threaded through the wall of the body of the scraper above itspivotal poin and contacting with a boss 96 (Fig. 1) projecting from thecasing. Co-operating with the exposed inner portion or hub of thebrushbody and with the adjacent section of the shaft 1 at the sideopposite he scraper 85 is a scraping member 98, urged by a spring 100toward these portions of the brush and shaft. The paste removed by thescraper 98 will fall downwardly, in part upon the hub of the roll 72,where it will be acted upon by the portion 90 of the scraper 85.Depending upon the adjustment of the screw 94, the edges of this scraper85 at 86 and 88 will approach more or less closely to thework-supporting surface of the roll and to the gage-disk 7 6. If theadjustment is such that the scraper is in contact with these,practically all the paste will be removed therefrom, so that none willbe applied to the exterior of the counter. If, on the other hand, thespacing of the scraper from the roll is greater, some paste will becarried upon the roll-surface and gage, and will be received by theoutside of the counter. All the paste removed from the hub of the brushand from the various portions of the roll 72 may enter the enlargedmouth 102 of a vertical conduit 10% extending along the casing beneaththe work-engaging members, and at its lower end turning inwardly todeliver to the receptacle. The passage ofthis conduit 104 into thereceptacle may be The inner extremity through a contracted'opening 106in a cover 108 resting upon the upper edge of the receptacle-wall. Thislargely prevents the evaporation of the moisture from the paste, andsince the excess is promptly removed from the work-engaging members, thetendency to deteriorate by drying is small.

At the opposite sideof the work-engaging members from the table 8% is asubstantially alined table. 110, upon which the coated work-pieces maybe received and'temporarily held for removal from the machine.

The operator, in using this apparatus, advances the counters .over thesurface 84, so that the forward edge of one of the sides of thebody-portion c enters between the applying surface of the brush and thesupporting surface of the roll and with the flange a resting at itsouter face against the gagedisk 76, while its inner face is in contactwith the sides of the outer fibers of the brush. At this time thetreadle 68 is depressed and the valve 58 open, so that the pump 38delivers paste from the receptacle 36 through the pipe 28 in quantitiesdetermined by the adjustment of the valve 68. The paste thus supplied tothe chamber in the interior of the brush-body emerges from the openings26, and, passing between the fibers, covers the peripheral surface andis applied to the interior of the counter-portion 0, which is fedforward by the rotation of the brush and the roll 72. The length of theapplying surface, as is shown most clearly in Fig. 2, is greater thanthe width of the counter-portion c. This, with the deflection of. thebristles at the inner extremity of the brush, because of their closerproximity to the supporting roll, wipes out and distributes the paste,away from the counter edge onto the supporting surface, from which it isremoved by the scraper 85. Consequently, there is no tendency for anexcess of paste to gather in a line along the counter edge, as would bethe case were the brushfibers to terminate at or near it, or were therelation of the bristles such that a lay-er of paste, uniform with thatupon the remainder of the counter-body, would be laid upon this edge.When the curved rear of the counter reaches the brush, the engagementtherewith of this and the roll turns the counter, so that it is reversedin direction, and the opposite side is fed between the engaging membersto receive the coating of paste. During this entire travel, the outerend of the brush is applying the paste to the inner face of the flangea, the outer face of which contacts with the gage 7 6 and holds thecounter from outward displacement. ,Whether the I outer surface of thecounter is coated is determined, as has already been pointed out,

by the distance between the edge of the scraper and the supporting rolland its gage-flange. If the operator leaves the ma .sides of said chine,the removal of the foot from the treadle causes the valve 58 to beclosed-by its spring 62, whereupon the delivery of paste by the pumpstops. v Having described my invention, what 1 claim as new and desireto secure by Letters Patent of the United States is:

1. In a molded-counter-pasting machine, rotatable members constructedand arranged to contact respectively with the inside and outside of acounter, and means for supply. ing paste to one of the members.

2. In a molded-counter-pasting machine, rotatable members constructedand arranged to contact respectively with the inside and outside of acounter, the member operating within the counter having a diameter approximatin the width between the opposite counter, and means forsupplying paste to one of the members.

3. In a molded-counter-pasting machine, rotatable counter-engagingmembers, the contour of the opposed surfaces of the members generallycorresponding to the form to. which a counter is molded, and means forsupplying paste to one of the members. I

4. In a molcled-counterpasting machine, a paste-applying member, and arotatable pressure member co-operating therewith, the longitudinalcontour of the peripheries of said members generally corresponding tothe transverse contour of the, body-portion of a counter.

5. In a molded-counter-pasting machine, rotatable counter-engagingmembers, the contour of the opposed surfaces of the members generallycorresponding tothe form to which the engaged counter is molded butdeparting therefrom at one extremity, and means for supplying paste toone of the members.

6. In a molded-counter-pasting machine, rotatable counter-engagingmembers, the contour of the opposed surfaces of the members generallycorresponding to the form to which the engaged counter is molded butapproaching each other more closely than elsewhere at the portions whichcontact with the upper edge of the counter, and means for supplyingpaste to one of the members.

7. In a molded-counter-pasting machine, rotatable members co-operatingrespectively with the inside and outside of a counter,

means for supplying paste to one of the members, and gage means carriedby the member outside the counter. I.

8. In a molded-counter-pasting machine, rotatable members co-operatingrespectively with the inside and outside of a counter, one of saidmembers having an annular projection for contact with a surface of thecounter, and means for supplying paste to one of the members- V 9. In amolded-counter-pasting machine, a paste-applying member, and a rotatableflange, movable members arranged to contact with opposite sides of thebody-portion, one of said members having a gage-portion for contact withthe counter-flange.

12. In a machine for pasting counters having an upper body-portion andbottomtlange, movable members arranged to contact with opposite sides ofthe body-portion, one of said members having a gage-portion for contactwith the counter-flange and both i of said members extending therefrombeyond the edge opposite the flange ofthe counter operated upon.

13. In a molded-counter-pasting machine, a brush arranged to enterbetween the opposite sides of a counter, a pressure member for contactwit-h the exterior of the counter, and means for supplying paste to thebrush.

1%. In a molded-counter-pasting machine, a. rotatable applying brush,and a countersupporting roll co-operating therewith, the supportingsurface of the roll substantially conforming to the contour of thecounter.

15. In a molded-counter-pasting machine, a rotatable applying brush, anda countersupporting roll co-operating therewith, the supporting surfaceof the roll substantially conforming to the contour of a counter and thefibers of the brush approaching more closely to the roll at the portionco-operating.

with the upper edge of the counter.-

16. In a molded-counter-pasting machine, a brush arranged to enterbetween the opposite sides of a counter, a pressure member for contactwith the exterior of the counter, a flange situated at one extremity ofthe pressure member and extending over the end of the brush, and meansfor supplying paste to the brush.

17. In a molded-counter-pasting machine, a member arranged to rotatebetween oppo site sides of a counter, a co-operating member rotatableoutside the counter, means for supplying paste to the first-mentionedmemher, and a scraper co-operating with the other member.

18. In a counter-pasting machine, rotatable members for co-operationwith the opposite sides of a counter, a gage rotatable with one of themembers, means for supplying paste to one of the members, and a scraperco-operating with a rotatable member and associated gage.

19. In a counter-pasting machine, a rotatable b'rush, a rollco-operating therewith and having at one extremity a flange, means forsupplying paste to the brush, and a scraper co-operating with the rolland flange.

20. In a counter-pasting machine, a rotatable brush having a supportingportion extending at one side, a co-operating roll situated below thebrush and having agageportion, and scrapers co-operating with thesupporting portion of the brush and with the roll and gageeportion.

21. In a pasting machine, a paste-applymember, means for deliveringpaste to the applying member, means for determining the delivery ornon-delivery of paste, and independent means for controlling thequantity of paste delivered, both the deliverydetermining means and thecontrolling means being constructed and arranged for actuation by theoperator.

22. In a pasting machine, a paste-applying member, a paste-conduitdelivering thereto, means for controlling the flow through the conduit,connections to the controlling means arranged to be actuated by theoperator when in operating position, and means for actuating thecontrolling means when the operator is out of operating position.

23. In a pasting machine, a paste-apply.-

ing member, means for moving said member.

to effect the application, a conduit delivering through the member, acontinuously .Operating pump for supplying the member and in which theconduit terminates, a. valve included in the conduit and controlling theflow from the pump, means for holding the valve normally closed, and atreadle con-. nected to the valve.

24. In a pasting machine, a casing, a hollow paste-applying meansprojecting from one side of the casing, a paste-receptacle situatedwithin the casing below the applving means, a pump for delivering pastefrom the receptacle through the interior of the applying means, andmeans for returning to the receptacle the excess of paste delivered tothe applying means.

25. In a pasting machine, a casing, a brush projecting from one side ofthe casing, means for rotating the brush, a paste-receptacle situatedwithin the casing below the brush, a pump immersed in the contents ofthe receptacle, a. conduit connecting the pump and interior of thebrush, and a conduit arranged to receive the excess of paste from thebrush and leading to the receptacle.

In testimony whereof I have signed my name to this specification.

ERNEST E. SABIN.

Certificate of Correction.

Patent No. 1,634,519. Granted July 5, 1927, to ERNEST E. SABIN.

It is hereby certified that error appears in the printed specificationof the abovenuinbered patent requiring correction as follows: Page 1,line 10, for the Word contour read counter, and that the said LettersPatent should be read With this correction therein that the same mayconform to the record of the case in the Patent Office.

Signed and sealed this 8th day of November, A. D. 1927.

[SEAL] I M. J. MOORE,

Aatimg Commissioner of Patents.

